1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
70 f(java_security_AccessControlContext) \
71 f(java_lang_reflect_AccessibleObject) \
72 f(java_lang_reflect_Method) \
73 f(java_lang_reflect_Constructor) \
74 f(java_lang_reflect_Field) \
75 f(java_nio_Buffer) \
76 f(reflect_ConstantPool) \
77 f(reflect_UnsafeStaticFieldAccessorImpl) \
78 f(java_lang_reflect_Parameter) \
79 f(java_lang_Module) \
80 f(java_lang_StackTraceElement) \
81 f(java_lang_StackFrameInfo) \
82 f(java_lang_LiveStackFrameInfo) \
83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
84 f(jdk_internal_misc_UnsafeConstants) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.String objects
92
93 class java_lang_String : AllStatic {
94 private:
95 static int value_offset;
96 static int hash_offset;
97 static int hashIsZero_offset;
98 static int coder_offset;
99
100 static bool initialized;
101
102 static Handle basic_create(int length, bool byte_arr, TRAPS);
103
104 static inline void set_coder(oop string, jbyte coder);
105
106 public:
107
108 // Coders
109 enum Coder {
110 CODER_LATIN1 = 0,
111 CODER_UTF16 = 1
112 };
113
114 static void compute_offsets();
115 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
116
117 // Instance creation
118 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
119 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
120 static Handle create_from_str(const char* utf8_str, TRAPS);
121 static oop create_oop_from_str(const char* utf8_str, TRAPS);
122 static Handle create_from_symbol(Symbol* symbol, TRAPS);
123 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
124 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
125
126 static void set_compact_strings(bool value);
127
128 static int value_offset_in_bytes() {
129 assert(initialized && (value_offset > 0), "Must be initialized");
130 return value_offset;
131 }
132 static int hash_offset_in_bytes() {
133 assert(initialized && (hash_offset > 0), "Must be initialized");
134 return hash_offset;
135 }
136 static int hashIsZero_offset_in_bytes() {
137 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
138 return hashIsZero_offset;
139 }
140 static int coder_offset_in_bytes() {
141 assert(initialized && (coder_offset > 0), "Must be initialized");
142 return coder_offset;
143 }
144
145 static inline void set_value_raw(oop string, typeArrayOop buffer);
146 static inline void set_value(oop string, typeArrayOop buffer);
147
148 // Accessors
149 static inline typeArrayOop value(oop java_string);
150 static inline typeArrayOop value_no_keepalive(oop java_string);
151 static inline bool hash_is_set(oop string);
152 static inline bool is_latin1(oop java_string);
153 static inline int length(oop java_string);
154 static inline int length(oop java_string, typeArrayOop string_value);
155 static int utf8_length(oop java_string);
156 static int utf8_length(oop java_string, typeArrayOop string_value);
157
158 // String converters
159 static char* as_utf8_string(oop java_string);
160 static char* as_utf8_string(oop java_string, char* buf, int buflen);
161 static char* as_utf8_string(oop java_string, int start, int len);
162 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
163 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
164 static char* as_platform_dependent_str(Handle java_string, TRAPS);
165 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
166 // produce an ascii string with all other values quoted using \u####
167 static char* as_quoted_ascii(oop java_string);
168
169 // Compute the hash value for a java.lang.String object which would
170 // contain the characters passed in.
171 //
172 // As the hash value used by the String object itself, in
173 // String.hashCode(). This value is normally calculated in Java code
174 // in the String.hashCode method(), but is precomputed for String
175 // objects in the shared archive file.
176 // hash P(31) from Kernighan & Ritchie
177 //
178 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
179 static unsigned int hash_code(const jchar* s, int len) {
180 unsigned int h = 0;
181 while (len-- > 0) {
182 h = 31*h + (unsigned int) *s;
183 s++;
184 }
185 return h;
186 }
187
188 static unsigned int hash_code(const jbyte* s, int len) {
189 unsigned int h = 0;
190 while (len-- > 0) {
191 h = 31*h + (((unsigned int) *s) & 0xFF);
192 s++;
193 }
194 return h;
195 }
196
197 static unsigned int hash_code(oop java_string);
198
199 static bool equals(oop java_string, const jchar* chars, int len);
200 static bool equals(oop str1, oop str2);
201 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
202
203 // Conversion between '.' and '/' formats
204 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
205
206 // Conversion
207 static Symbol* as_symbol(oop java_string);
208 static Symbol* as_symbol_or_null(oop java_string);
209
210 // Testers
211 static bool is_instance(oop obj);
212 static inline bool is_instance_inlined(oop obj);
213
214 // Debugging
215 static void print(oop java_string, outputStream* st);
216 friend class JavaClasses;
217 friend class StringTable;
218 };
219
220
221 // Interface to java.lang.Class objects
222
223 #define CLASS_INJECTED_FIELDS(macro) \
224 macro(java_lang_Class, klass, intptr_signature, false) \
225 macro(java_lang_Class, array_klass, intptr_signature, false) \
226 macro(java_lang_Class, oop_size, int_signature, false) \
227 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
228 macro(java_lang_Class, protection_domain, object_signature, false) \
229 macro(java_lang_Class, signers, object_signature, false) \
230 macro(java_lang_Class, source_file, object_signature, false) \
231
232 class java_lang_Class : AllStatic {
233 friend class VMStructs;
234 friend class JVMCIVMStructs;
235
236 private:
237 // The fake offsets are added by the class loader when java.lang.Class is loaded
238
239 static int _klass_offset;
240 static int _array_klass_offset;
241
242 static int _oop_size_offset;
243 static int _static_oop_field_count_offset;
244
245 static int _protection_domain_offset;
246 static int _init_lock_offset;
247 static int _signers_offset;
248 static int _class_loader_offset;
249 static int _module_offset;
250 static int _component_mirror_offset;
251 static int _name_offset;
252 static int _source_file_offset;
253
254 static bool offsets_computed;
255 static int classRedefinedCount_offset;
256
257 static GrowableArray<Klass*>* _fixup_mirror_list;
258 static GrowableArray<Klass*>* _fixup_module_field_list;
259
260 static void set_init_lock(oop java_class, oop init_lock);
261 static void set_protection_domain(oop java_class, oop protection_domain);
262 static void set_class_loader(oop java_class, oop class_loader);
263 static void set_component_mirror(oop java_class, oop comp_mirror);
264 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
265 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
266 public:
267 static void allocate_fixup_lists();
268 static void compute_offsets();
269
270 // Instance creation
271 static void create_mirror(Klass* k, Handle class_loader, Handle module,
272 Handle protection_domain, TRAPS);
273 static void fixup_mirror(Klass* k, TRAPS);
274 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
275 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
276
277 // Archiving
278 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
279 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
280 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
281 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
282 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
283 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
284 Handle protection_domain,
285 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
286
287 static void fixup_module_field(Klass* k, Handle module);
288
289 // Conversion
290 static Klass* as_Klass(oop java_class);
291 static Klass* as_Klass_raw(oop java_class);
292 static void set_klass(oop java_class, Klass* klass);
293 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
294 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
295 static void print_signature(oop java_class, outputStream *st);
296 static const char* as_external_name(oop java_class);
297 // Testing
298 static bool is_instance(oop obj);
299
300 static bool is_primitive(oop java_class);
301 static BasicType primitive_type(oop java_class);
302 static oop primitive_mirror(BasicType t);
303 // JVM_NewArray support
304 static Klass* array_klass_acquire(oop java_class);
305 static void release_set_array_klass(oop java_class, Klass* klass);
306 // compiler support for class operations
307 static int klass_offset_in_bytes() { return _klass_offset; }
308 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
309 // Support for classRedefinedCount field
310 static int classRedefinedCount(oop the_class_mirror);
311 static void set_classRedefinedCount(oop the_class_mirror, int value);
312
313 // Support for embedded per-class oops
314 static oop protection_domain(oop java_class);
315 static oop init_lock(oop java_class);
316 static oop component_mirror(oop java_class);
317 static objArrayOop signers(oop java_class);
318 static void set_signers(oop java_class, objArrayOop signers);
319
320 static oop class_loader(oop java_class);
321 static void set_module(oop java_class, oop module);
322 static oop module(oop java_class);
323
324 static oop name(Handle java_class, TRAPS);
325
326 static oop source_file(oop java_class);
327 static void set_source_file(oop java_class, oop source_file);
328
329 static int oop_size(oop java_class);
330 static int oop_size_raw(oop java_class);
331 static void set_oop_size(HeapWord* java_class, int size);
332 static int static_oop_field_count(oop java_class);
333 static int static_oop_field_count_raw(oop java_class);
334 static void set_static_oop_field_count(oop java_class, int size);
335
336 static GrowableArray<Klass*>* fixup_mirror_list() {
337 return _fixup_mirror_list;
338 }
339 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
340 _fixup_mirror_list = v;
341 }
342
343 static GrowableArray<Klass*>* fixup_module_field_list() {
344 return _fixup_module_field_list;
345 }
346 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
347 _fixup_module_field_list = v;
348 }
349
350 // Debugging
351 friend class JavaClasses;
352 friend class InstanceKlass; // verification code accesses offsets
353 friend class ClassFileParser; // access to number_of_fake_fields
354 };
355
356 // Interface to java.lang.Thread objects
357
358 class java_lang_Thread : AllStatic {
359 private:
360 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
361 // so we compute the offsets at startup rather than hard-wiring them.
362 static int _name_offset;
363 static int _group_offset;
364 static int _contextClassLoader_offset;
365 static int _inheritedAccessControlContext_offset;
366 static int _priority_offset;
367 static int _eetop_offset;
368 static int _daemon_offset;
369 static int _stillborn_offset;
370 static int _stackSize_offset;
371 static int _tid_offset;
372 static int _thread_status_offset;
373 static int _park_blocker_offset;
374
375 static void compute_offsets();
376
377 public:
378 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
379
380 // Instance creation
381 static oop create();
382 // Returns the JavaThread associated with the thread obj
383 static JavaThread* thread(oop java_thread);
384 // Set JavaThread for instance
385 static void set_thread(oop java_thread, JavaThread* thread);
386 // Name
387 static oop name(oop java_thread);
388 static void set_name(oop java_thread, oop name);
389 // Priority
390 static ThreadPriority priority(oop java_thread);
391 static void set_priority(oop java_thread, ThreadPriority priority);
392 // Thread group
393 static oop threadGroup(oop java_thread);
394 // Stillborn
395 static bool is_stillborn(oop java_thread);
396 static void set_stillborn(oop java_thread);
397 // Alive (NOTE: this is not really a field, but provides the correct
398 // definition without doing a Java call)
399 static bool is_alive(oop java_thread);
400 // Daemon
401 static bool is_daemon(oop java_thread);
402 static void set_daemon(oop java_thread);
403 // Context ClassLoader
404 static oop context_class_loader(oop java_thread);
405 // Control context
406 static oop inherited_access_control_context(oop java_thread);
407 // Stack size hint
408 static jlong stackSize(oop java_thread);
409 // Thread ID
410 static jlong thread_id(oop java_thread);
411
412 // Blocker object responsible for thread parking
413 static oop park_blocker(oop java_thread);
414
415 // Java Thread Status for JVMTI and M&M use.
416 // This thread status info is saved in threadStatus field of
417 // java.lang.Thread java class.
418 enum ThreadStatus {
419 NEW = 0,
420 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
421 JVMTI_THREAD_STATE_RUNNABLE,
422 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
423 JVMTI_THREAD_STATE_WAITING +
424 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
425 JVMTI_THREAD_STATE_SLEEPING,
426 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
427 JVMTI_THREAD_STATE_WAITING +
428 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
429 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
430 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
431 JVMTI_THREAD_STATE_WAITING +
432 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
433 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
434 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
435 JVMTI_THREAD_STATE_WAITING +
436 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
437 JVMTI_THREAD_STATE_PARKED,
438 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
439 JVMTI_THREAD_STATE_WAITING +
440 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
441 JVMTI_THREAD_STATE_PARKED,
442 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
443 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
444 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
445 };
446 // Write thread status info to threadStatus field of java.lang.Thread.
447 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
448 // Read thread status info from threadStatus field of java.lang.Thread.
449 static ThreadStatus get_thread_status(oop java_thread_oop);
450
451 static const char* thread_status_name(oop java_thread_oop);
452
453 // Debugging
454 friend class JavaClasses;
455 };
456
457 // Interface to java.lang.ThreadGroup objects
458
459 class java_lang_ThreadGroup : AllStatic {
460 private:
461 static int _parent_offset;
462 static int _name_offset;
463 static int _threads_offset;
464 static int _groups_offset;
465 static int _maxPriority_offset;
466 static int _destroyed_offset;
467 static int _daemon_offset;
468 static int _nthreads_offset;
469 static int _ngroups_offset;
470
471 static void compute_offsets();
472
473 public:
474 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
475
476 // parent ThreadGroup
477 static oop parent(oop java_thread_group);
478 // name
479 static const char* name(oop java_thread_group);
480 // ("name as oop" accessor is not necessary)
481 // Number of threads in group
482 static int nthreads(oop java_thread_group);
483 // threads
484 static objArrayOop threads(oop java_thread_group);
485 // Number of threads in group
486 static int ngroups(oop java_thread_group);
487 // groups
488 static objArrayOop groups(oop java_thread_group);
489 // maxPriority in group
490 static ThreadPriority maxPriority(oop java_thread_group);
491 // Destroyed
492 static bool is_destroyed(oop java_thread_group);
493 // Daemon
494 static bool is_daemon(oop java_thread_group);
495 // Debugging
496 friend class JavaClasses;
497 };
498
499
500
501 // Interface to java.lang.Throwable objects
502
503 class java_lang_Throwable: AllStatic {
504 friend class BacktraceBuilder;
505 friend class BacktraceIterator;
506
507 private:
508 // Offsets
509 enum {
510 hc_backtrace_offset = 0,
511 hc_detailMessage_offset = 1,
512 hc_cause_offset = 2, // New since 1.4
513 hc_stackTrace_offset = 3 // New since 1.4
514 };
515 // Trace constants
516 enum {
517 trace_methods_offset = 0,
518 trace_bcis_offset = 1,
519 trace_mirrors_offset = 2,
520 trace_names_offset = 3,
521 trace_next_offset = 4,
522 trace_size = 5,
523 trace_chunk_size = 32
524 };
525
526 static int backtrace_offset;
527 static int detailMessage_offset;
528 static int stackTrace_offset;
529 static int depth_offset;
530 static int static_unassigned_stacktrace_offset;
531
532 // StackTrace (programmatic access, new since 1.4)
533 static void clear_stacktrace(oop throwable);
534 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
535 static void set_stacktrace(oop throwable, oop st_element_array);
536 static oop unassigned_stacktrace();
537
538 public:
539 // Backtrace
540 static oop backtrace(oop throwable);
541 static void set_backtrace(oop throwable, oop value);
542 static int depth(oop throwable);
543 static void set_depth(oop throwable, int value);
544 // Needed by JVMTI to filter out this internal field.
545 static int get_backtrace_offset() { return backtrace_offset;}
546 static int get_detailMessage_offset() { return detailMessage_offset;}
547 // Message
548 static oop message(oop throwable);
549 static void set_message(oop throwable, oop value);
550 static Symbol* detail_message(oop throwable);
551 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
552 static void print_stack_usage(Handle stream);
553
554 static void compute_offsets();
555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
556
557 // Allocate space for backtrace (created but stack trace not filled in)
558 static void allocate_backtrace(Handle throwable, TRAPS);
559 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
560 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
561 // Fill in current stack trace, can cause GC
562 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
563 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
564 // Programmatic access to stack trace
565 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
566 // Printing
567 static void print(oop throwable, outputStream* st);
568 static void print_stack_trace(Handle throwable, outputStream* st);
569 static void java_printStackTrace(Handle throwable, TRAPS);
570 // Debugging
571 friend class JavaClasses;
572 };
573
574
575 // Interface to java.lang.reflect.AccessibleObject objects
576
577 class java_lang_reflect_AccessibleObject: AllStatic {
578 private:
579 // Note that to reduce dependencies on the JDK we compute these
580 // offsets at run-time.
581 static int override_offset;
582
583 static void compute_offsets();
584
585 public:
586 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
587
588 // Accessors
589 static jboolean override(oop reflect);
590 static void set_override(oop reflect, jboolean value);
591
592 // Debugging
593 friend class JavaClasses;
594 };
595
596
597 // Interface to java.lang.reflect.Method objects
598
599 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
600 private:
601 // Note that to reduce dependencies on the JDK we compute these
602 // offsets at run-time.
603 static int clazz_offset;
604 static int name_offset;
605 static int returnType_offset;
606 static int parameterTypes_offset;
607 static int exceptionTypes_offset;
608 static int slot_offset;
609 static int modifiers_offset;
610 static int signature_offset;
611 static int annotations_offset;
612 static int parameter_annotations_offset;
613 static int annotation_default_offset;
614
615 static void compute_offsets();
616 public:
617 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
618
619 // Allocation
620 static Handle create(TRAPS);
621
622 // Accessors
623 static oop clazz(oop reflect);
624 static void set_clazz(oop reflect, oop value);
625
626 static void set_name(oop method, oop value);
627
628 static oop return_type(oop method);
629 static void set_return_type(oop method, oop value);
630
631 static oop parameter_types(oop method);
632 static void set_parameter_types(oop method, oop value);
633
634 static int slot(oop reflect);
635 static void set_slot(oop reflect, int value);
636
637 static void set_exception_types(oop method, oop value);
638 static void set_modifiers(oop method, int value);
639 static void set_signature(oop method, oop value);
640 static void set_annotations(oop method, oop value);
641 static void set_parameter_annotations(oop method, oop value);
642 static void set_annotation_default(oop method, oop value);
643
644 // Debugging
645 friend class JavaClasses;
646 };
647
648
649 // Interface to java.lang.reflect.Constructor objects
650
651 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
652 private:
653 // Note that to reduce dependencies on the JDK we compute these
654 // offsets at run-time.
655 static int clazz_offset;
656 static int parameterTypes_offset;
657 static int exceptionTypes_offset;
658 static int slot_offset;
659 static int modifiers_offset;
660 static int signature_offset;
661 static int annotations_offset;
662 static int parameter_annotations_offset;
663
664 static void compute_offsets();
665 public:
666 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
667
668 // Allocation
669 static Handle create(TRAPS);
670
671 // Accessors
672 static oop clazz(oop reflect);
673 static void set_clazz(oop reflect, oop value);
674
675 static oop parameter_types(oop constructor);
676 static void set_parameter_types(oop constructor, oop value);
677
678 static int slot(oop reflect);
679 static void set_slot(oop reflect, int value);
680
681 static void set_exception_types(oop constructor, oop value);
682 static void set_modifiers(oop constructor, int value);
683 static void set_signature(oop constructor, oop value);
684 static void set_annotations(oop constructor, oop value);
685 static void set_parameter_annotations(oop method, oop value);
686
687 // Debugging
688 friend class JavaClasses;
689 };
690
691
692 // Interface to java.lang.reflect.Field objects
693
694 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
695 private:
696 // Note that to reduce dependencies on the JDK we compute these
697 // offsets at run-time.
698 static int clazz_offset;
699 static int name_offset;
700 static int type_offset;
701 static int slot_offset;
702 static int modifiers_offset;
703 static int signature_offset;
704 static int annotations_offset;
705
706 static void compute_offsets();
707
708 public:
709 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
710
711 // Allocation
712 static Handle create(TRAPS);
713
714 // Accessors
715 static oop clazz(oop reflect);
716 static void set_clazz(oop reflect, oop value);
717
718 static oop name(oop field);
719 static void set_name(oop field, oop value);
720
721 static oop type(oop field);
722 static void set_type(oop field, oop value);
723
724 static int slot(oop reflect);
725 static void set_slot(oop reflect, int value);
726
727 static int modifiers(oop field);
728 static void set_modifiers(oop field, int value);
729
730 static void set_signature(oop constructor, oop value);
731 static void set_annotations(oop constructor, oop value);
732 static void set_parameter_annotations(oop method, oop value);
733 static void set_annotation_default(oop method, oop value);
734
735 // Debugging
736 friend class JavaClasses;
737 };
738
739 class java_lang_reflect_Parameter {
740 private:
741 // Note that to reduce dependencies on the JDK we compute these
742 // offsets at run-time.
743 static int name_offset;
744 static int modifiers_offset;
745 static int index_offset;
746 static int executable_offset;
747
748 static void compute_offsets();
749
750 public:
751 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
752
753 // Allocation
754 static Handle create(TRAPS);
755
756 // Accessors
757 static oop name(oop field);
758 static void set_name(oop field, oop value);
759
760 static int index(oop reflect);
761 static void set_index(oop reflect, int value);
762
763 static int modifiers(oop reflect);
764 static void set_modifiers(oop reflect, int value);
765
766 static oop executable(oop constructor);
767 static void set_executable(oop constructor, oop value);
768
769 friend class JavaClasses;
770 };
771
772 #define MODULE_INJECTED_FIELDS(macro) \
773 macro(java_lang_Module, module_entry, intptr_signature, false)
774
775 class java_lang_Module {
776 private:
777 static int loader_offset;
778 static int name_offset;
779 static int _module_entry_offset;
780 static void compute_offsets();
781
782 public:
783 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
784
785 // Allocation
786 static Handle create(Handle loader, Handle module_name, TRAPS);
787
788 // Testers
789 static bool is_instance(oop obj);
790
791 // Accessors
792 static oop loader(oop module);
793 static void set_loader(oop module, oop value);
794
795 static oop name(oop module);
796 static void set_name(oop module, oop value);
797
798 static ModuleEntry* module_entry(oop module);
799 static void set_module_entry(oop module, ModuleEntry* module_entry);
800
801 friend class JavaClasses;
802 };
803
804 // Interface to jdk.internal.reflect.ConstantPool objects
805 class reflect_ConstantPool {
806 private:
807 // Note that to reduce dependencies on the JDK we compute these
808 // offsets at run-time.
809 static int _oop_offset;
810
811 static void compute_offsets();
812
813 public:
814 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
815
816 // Allocation
817 static Handle create(TRAPS);
818
819 // Accessors
820 static void set_cp(oop reflect, ConstantPool* value);
821 static int oop_offset() {
822 return _oop_offset;
823 }
824
825 static ConstantPool* get_cp(oop reflect);
826
827 // Debugging
828 friend class JavaClasses;
829 };
830
831 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
832 class reflect_UnsafeStaticFieldAccessorImpl {
833 private:
834 static int _base_offset;
835 static void compute_offsets();
836
837 public:
838 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
839
840 static int base_offset() {
841 return _base_offset;
842 }
843
844 // Debugging
845 friend class JavaClasses;
846 };
847
848 // Interface to java.lang primitive type boxing objects:
849 // - java.lang.Boolean
850 // - java.lang.Character
851 // - java.lang.Float
852 // - java.lang.Double
853 // - java.lang.Byte
854 // - java.lang.Short
855 // - java.lang.Integer
856 // - java.lang.Long
857
858 // This could be separated out into 8 individual classes.
859
860 class java_lang_boxing_object: AllStatic {
861 private:
862 enum {
863 hc_value_offset = 0
864 };
865 static int value_offset;
866 static int long_value_offset;
867
868 static oop initialize_and_allocate(BasicType type, TRAPS);
869 public:
870 // Allocation. Returns a boxed value, or NULL for invalid type.
871 static oop create(BasicType type, jvalue* value, TRAPS);
872 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
873 static BasicType get_value(oop box, jvalue* value);
874 static BasicType set_value(oop box, jvalue* value);
875 static BasicType basic_type(oop box);
876 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
877 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
878 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
879 static void print(BasicType type, jvalue* value, outputStream* st);
880
881 static int value_offset_in_bytes(BasicType type) {
882 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
883 value_offset;
884 }
885
886 // Debugging
887 friend class JavaClasses;
888 };
889
890
891
892 // Interface to java.lang.ref.Reference objects
893
894 class java_lang_ref_Reference: AllStatic {
895 public:
896 enum {
897 hc_referent_offset = 0,
898 hc_queue_offset = 1,
899 hc_next_offset = 2,
900 hc_discovered_offset = 3 // Is not last, see SoftRefs.
901 };
902
903 static int referent_offset;
904 static int queue_offset;
905 static int next_offset;
906 static int discovered_offset;
907
908 // Accessors
909 static inline oop referent(oop ref);
910 static inline void set_referent(oop ref, oop value);
911 static inline void set_referent_raw(oop ref, oop value);
912 static inline HeapWord* referent_addr_raw(oop ref);
913 static inline oop next(oop ref);
914 static inline void set_next(oop ref, oop value);
915 static inline void set_next_raw(oop ref, oop value);
916 static inline HeapWord* next_addr_raw(oop ref);
917 static inline oop discovered(oop ref);
918 static inline void set_discovered(oop ref, oop value);
919 static inline void set_discovered_raw(oop ref, oop value);
920 static inline HeapWord* discovered_addr_raw(oop ref);
921 static inline oop queue(oop ref);
922 static inline void set_queue(oop ref, oop value);
923 static bool is_referent_field(oop obj, ptrdiff_t offset);
924 static inline bool is_final(oop ref);
925 static inline bool is_phantom(oop ref);
926 };
927
928
929 // Interface to java.lang.ref.SoftReference objects
930
931 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
932 public:
933 static int timestamp_offset;
934 static int static_clock_offset;
935
936 // Accessors
937 static jlong timestamp(oop ref);
938
939 // Accessors for statics
940 static jlong clock();
941 static void set_clock(jlong value);
942
943 static void compute_offsets();
944 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
945 };
946
947 // Interface to java.lang.invoke.MethodHandle objects
948
949 class MethodHandleEntry;
950
951 class java_lang_invoke_MethodHandle: AllStatic {
952 friend class JavaClasses;
953
954 private:
955 static int _type_offset; // the MethodType of this MH
956 static int _form_offset; // the LambdaForm of this MH
957
958 static void compute_offsets();
959
960 public:
961 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
962
963 // Accessors
964 static oop type(oop mh);
965 static void set_type(oop mh, oop mtype);
966
967 static oop form(oop mh);
968 static void set_form(oop mh, oop lform);
969
970 // Testers
971 static bool is_subclass(Klass* klass) {
972 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
973 }
974 static bool is_instance(oop obj);
975
976 // Accessors for code generation:
977 static int type_offset_in_bytes() { return _type_offset; }
978 static int form_offset_in_bytes() { return _form_offset; }
979 };
980
981 // Interface to java.lang.invoke.DirectMethodHandle objects
982
983 class java_lang_invoke_DirectMethodHandle: AllStatic {
984 friend class JavaClasses;
985
986 private:
987 static int _member_offset; // the MemberName of this DMH
988
989 static void compute_offsets();
990
991 public:
992 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
993
994 // Accessors
995 static oop member(oop mh);
996
997 // Testers
998 static bool is_subclass(Klass* klass) {
999 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1000 }
1001 static bool is_instance(oop obj);
1002
1003 // Accessors for code generation:
1004 static int member_offset_in_bytes() { return _member_offset; }
1005 };
1006
1007 // Interface to java.lang.invoke.LambdaForm objects
1008 // (These are a private interface for managing adapter code generation.)
1009
1010 class java_lang_invoke_LambdaForm: AllStatic {
1011 friend class JavaClasses;
1012
1013 private:
1014 static int _vmentry_offset; // type is MemberName
1015
1016 static void compute_offsets();
1017
1018 public:
1019 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1020
1021 // Accessors
1022 static oop vmentry(oop lform);
1023 static void set_vmentry(oop lform, oop invoker);
1024
1025 // Testers
1026 static bool is_subclass(Klass* klass) {
1027 return SystemDictionary::LambdaForm_klass() != NULL &&
1028 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1029 }
1030 static bool is_instance(oop obj);
1031
1032 // Accessors for code generation:
1033 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1034 };
1035
1036
1037 // Interface to java.lang.invoke.MemberName objects
1038 // (These are a private interface for Java code to query the class hierarchy.)
1039
1040 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1041 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1042 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1043
1044 class java_lang_invoke_ResolvedMethodName : AllStatic {
1045 friend class JavaClasses;
1046
1047 static int _vmtarget_offset;
1048 static int _vmholder_offset;
1049
1050 static void compute_offsets();
1051 public:
1052 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1053
1054 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1055
1056 static Method* vmtarget(oop resolved_method);
1057 static void set_vmtarget(oop resolved_method, Method* method);
1058
1059 static void set_vmholder(oop resolved_method, oop holder);
1060
1061 // find or create resolved member name
1062 static oop find_resolved_method(const methodHandle& m, TRAPS);
1063
1064 static bool is_instance(oop resolved_method);
1065 };
1066
1067
1068 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1069 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1070
1071
1072 class java_lang_invoke_MemberName: AllStatic {
1073 friend class JavaClasses;
1074
1075 private:
1076 // From java.lang.invoke.MemberName:
1077 // private Class<?> clazz; // class in which the method is defined
1078 // private String name; // may be null if not yet materialized
1079 // private Object type; // may be null if not yet materialized
1080 // private int flags; // modifier bits; see reflect.Modifier
1081 // private ResolvedMethodName method; // holds VM-specific target value
1082 // private intptr_t vmindex; // member index within class or interface
1083 static int _clazz_offset;
1084 static int _name_offset;
1085 static int _type_offset;
1086 static int _flags_offset;
1087 static int _method_offset;
1088 static int _vmindex_offset;
1089
1090 static void compute_offsets();
1091
1092 public:
1093 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1094 // Accessors
1095 static oop clazz(oop mname);
1096 static void set_clazz(oop mname, oop clazz);
1097
1098 static oop type(oop mname);
1099 static void set_type(oop mname, oop type);
1100
1101 static oop name(oop mname);
1102 static void set_name(oop mname, oop name);
1103
1104 static int flags(oop mname);
1105 static void set_flags(oop mname, int flags);
1106
1107 // Link through ResolvedMethodName field to get Method*
1108 static Method* vmtarget(oop mname);
1109 static void set_method(oop mname, oop method);
1110
1111 static intptr_t vmindex(oop mname);
1112 static void set_vmindex(oop mname, intptr_t index);
1113
1114 // Testers
1115 static bool is_subclass(Klass* klass) {
1116 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1117 }
1118 static bool is_instance(oop obj);
1119
1120 static bool is_method(oop obj);
1121
1122 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1123 enum {
1124 MN_IS_METHOD = 0x00010000, // method (not constructor)
1125 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1126 MN_IS_FIELD = 0x00040000, // field
1127 MN_IS_TYPE = 0x00080000, // nested type
1128 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1129 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1130 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1131 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1132 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1133 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1134 };
1135
1136 // Accessors for code generation:
1137 static int clazz_offset_in_bytes() { return _clazz_offset; }
1138 static int type_offset_in_bytes() { return _type_offset; }
1139 static int name_offset_in_bytes() { return _name_offset; }
1140 static int flags_offset_in_bytes() { return _flags_offset; }
1141 static int method_offset_in_bytes() { return _method_offset; }
1142 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1143 };
1144
1145
1146 // Interface to java.lang.invoke.MethodType objects
1147
1148 class java_lang_invoke_MethodType: AllStatic {
1149 friend class JavaClasses;
1150
1151 private:
1152 static int _rtype_offset;
1153 static int _ptypes_offset;
1154
1155 static void compute_offsets();
1156
1157 public:
1158 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1159 // Accessors
1160 static oop rtype(oop mt);
1161 static objArrayOop ptypes(oop mt);
1162
1163 static oop ptype(oop mt, int index);
1164 static int ptype_count(oop mt);
1165
1166 static int ptype_slot_count(oop mt); // extra counts for long/double
1167 static int rtype_slot_count(oop mt); // extra counts for long/double
1168
1169 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1170 static void print_signature(oop mt, outputStream* st);
1171
1172 static bool is_instance(oop obj);
1173
1174 static bool equals(oop mt1, oop mt2);
1175
1176 // Accessors for code generation:
1177 static int rtype_offset_in_bytes() { return _rtype_offset; }
1178 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1179 };
1180
1181
1182 // Interface to java.lang.invoke.CallSite objects
1183
1184 class java_lang_invoke_CallSite: AllStatic {
1185 friend class JavaClasses;
1186
1187 private:
1188 static int _target_offset;
1189 static int _context_offset;
1190
1191 static void compute_offsets();
1192
1193 public:
1194 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1195 // Accessors
1196 static oop target( oop site);
1197 static void set_target( oop site, oop target);
1198 static void set_target_volatile( oop site, oop target);
1199
1200 static oop context_no_keepalive(oop site);
1201
1202 // Testers
1203 static bool is_subclass(Klass* klass) {
1204 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1205 }
1206 static bool is_instance(oop obj);
1207
1208 // Accessors for code generation:
1209 static int target_offset_in_bytes() { return _target_offset; }
1210 };
1211
1212 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1213
1214 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1215 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1216 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1217
1218 class DependencyContext;
1219
1220 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1221 friend class JavaClasses;
1222
1223 private:
1224 static int _vmdependencies_offset;
1225 static int _last_cleanup_offset;
1226
1227 static void compute_offsets();
1228
1229 public:
1230 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1231 // Accessors
1232 static DependencyContext vmdependencies(oop context);
1233
1234 // Testers
1235 static bool is_subclass(Klass* klass) {
1236 return klass->is_subclass_of(SystemDictionary::Context_klass());
1237 }
1238 static bool is_instance(oop obj);
1239 };
1240
1241 // Interface to java.security.AccessControlContext objects
1242
1243 class java_security_AccessControlContext: AllStatic {
1244 private:
1245 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1246 // so we compute the offsets at startup rather than hard-wiring them.
1247 static int _context_offset;
1248 static int _privilegedContext_offset;
1249 static int _isPrivileged_offset;
1250 static int _isAuthorized_offset;
1251
1252 static void compute_offsets();
1253 public:
1254 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1255 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1256
1257 // Debugging/initialization
1258 friend class JavaClasses;
1259 };
1260
1261
1262 // Interface to java.lang.ClassLoader objects
1263
1264 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1265 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1266
1267 class java_lang_ClassLoader : AllStatic {
1268 private:
1269 static int _loader_data_offset;
1270 static bool offsets_computed;
1271 static int parent_offset;
1272 static int parallelCapable_offset;
1273 static int name_offset;
1274 static int nameAndId_offset;
1275 static int unnamedModule_offset;
1276
1277 public:
1278 static void compute_offsets();
1279 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1280
1281 static ClassLoaderData* loader_data_acquire(oop loader);
1282 static ClassLoaderData* loader_data_raw(oop loader);
1283 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1284
1285 static oop parent(oop loader);
1286 static oop name(oop loader);
1287 static oop nameAndId(oop loader);
1288 static bool isAncestor(oop loader, oop cl);
1289
1290 // Support for parallelCapable field
1291 static bool parallelCapable(oop the_class_mirror);
1292
1293 static bool is_trusted_loader(oop loader);
1294
1295 // Return true if this is one of the class loaders associated with
1296 // the generated bytecodes for reflection.
1297 static bool is_reflection_class_loader(oop loader);
1298
1299 // Fix for 4474172
1300 static oop non_reflection_class_loader(oop loader);
1301
1302 // Testers
1303 static bool is_subclass(Klass* klass) {
1304 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1305 }
1306 static bool is_instance(oop obj);
1307
1308 static oop unnamedModule(oop loader);
1309
1310 // Debugging
1311 friend class JavaClasses;
1312 friend class ClassFileParser; // access to number_of_fake_fields
1313 };
1314
1315
1316 // Interface to java.lang.System objects
1317
1318 class java_lang_System : AllStatic {
1319 private:
1320 static int static_in_offset;
1321 static int static_out_offset;
1322 static int static_err_offset;
1323 static int static_security_offset;
1324
1325 public:
1326 static int in_offset_in_bytes();
1327 static int out_offset_in_bytes();
1328 static int err_offset_in_bytes();
1329
1330 static void compute_offsets();
1331 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1332
1333 // Debugging
1334 friend class JavaClasses;
1335 };
1336
1337
1338 // Interface to java.lang.StackTraceElement objects
1339
1340 class java_lang_StackTraceElement: AllStatic {
1341 private:
1342 static int declaringClassObject_offset;
1343 static int classLoaderName_offset;
1344 static int moduleName_offset;
1345 static int moduleVersion_offset;
1346 static int declaringClass_offset;
1347 static int methodName_offset;
1348 static int fileName_offset;
1349 static int lineNumber_offset;
1350
1351 // Setters
1352 static void set_classLoaderName(oop element, oop value);
1353 static void set_moduleName(oop element, oop value);
1354 static void set_moduleVersion(oop element, oop value);
1355 static void set_declaringClass(oop element, oop value);
1356 static void set_methodName(oop element, oop value);
1357 static void set_fileName(oop element, oop value);
1358 static void set_lineNumber(oop element, int value);
1359 static void set_declaringClassObject(oop element, oop value);
1360
1361 public:
1362 // Create an instance of StackTraceElement
1363 static oop create(const methodHandle& method, int bci, TRAPS);
1364
1365 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1366 int version, int bci, Symbol* name, TRAPS);
1367
1368 static void compute_offsets();
1369 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1370
1371 #if INCLUDE_JVMCI
1372 static void decode(Handle mirror, int method, int version, int bci, int cpref, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1373 static void decode(Handle mirror, methodHandle method, int bci, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1374 #endif
1375
1376 // Debugging
1377 friend class JavaClasses;
1378 };
1379
1380
1381 class Backtrace: AllStatic {
1382 public:
1383 // Helper backtrace functions to store bci|version together.
1384 static int merge_bci_and_version(int bci, int version);
1385 static int merge_mid_and_cpref(int mid, int cpref);
1386 static int bci_at(unsigned int merged);
1387 static int version_at(unsigned int merged);
1388 static int mid_at(unsigned int merged);
1389 static int cpref_at(unsigned int merged);
1390 static int get_line_number(const methodHandle& method, int bci);
1391 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1392
1393 // Debugging
1394 friend class JavaClasses;
1395 };
1396
1397 // Interface to java.lang.StackFrameInfo objects
1398
1399 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1400 macro(java_lang_StackFrameInfo, version, short_signature, false)
1401
1402 class java_lang_StackFrameInfo: AllStatic {
1403 private:
1404 static int _memberName_offset;
1405 static int _bci_offset;
1406 static int _version_offset;
1407
1408 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1409
1410 public:
1411 // Setters
1412 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1413 static void set_bci(oop info, int value);
1414
1415 static void set_version(oop info, short value);
1416
1417 static void compute_offsets();
1418 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1419
1420 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1421
1422 // Debugging
1423 friend class JavaClasses;
1424 };
1425
1426 class java_lang_LiveStackFrameInfo: AllStatic {
1427 private:
1428 static int _monitors_offset;
1429 static int _locals_offset;
1430 static int _operands_offset;
1431 static int _mode_offset;
1432
1433 public:
1434 static void set_monitors(oop info, oop value);
1435 static void set_locals(oop info, oop value);
1436 static void set_operands(oop info, oop value);
1437 static void set_mode(oop info, int value);
1438
1439 static void compute_offsets();
1440 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1441
1442 // Debugging
1443 friend class JavaClasses;
1444 };
1445
1446 // Interface to java.lang.AssertionStatusDirectives objects
1447
1448 class java_lang_AssertionStatusDirectives: AllStatic {
1449 private:
1450 static int classes_offset;
1451 static int classEnabled_offset;
1452 static int packages_offset;
1453 static int packageEnabled_offset;
1454 static int deflt_offset;
1455
1456 public:
1457 // Setters
1458 static void set_classes(oop obj, oop val);
1459 static void set_classEnabled(oop obj, oop val);
1460 static void set_packages(oop obj, oop val);
1461 static void set_packageEnabled(oop obj, oop val);
1462 static void set_deflt(oop obj, bool val);
1463
1464 static void compute_offsets();
1465 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1466
1467 // Debugging
1468 friend class JavaClasses;
1469 };
1470
1471
1472 class java_nio_Buffer: AllStatic {
1473 private:
1474 static int _limit_offset;
1475
1476 public:
1477 static int limit_offset();
1478 static void compute_offsets();
1479 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1480 };
1481
1482 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1483 private:
1484 static int _owner_offset;
1485 public:
1486 static void compute_offsets();
1487 static oop get_owner_threadObj(oop obj);
1488 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1489 };
1490
1491 // Interface to jdk.internal.misc.UnsafeConsants
1492
1493 class jdk_internal_misc_UnsafeConstants : AllStatic {
1494 public:
1495 static void set_unsafe_constants();
1496 static void compute_offsets() { }
1497 static void serialize_offsets(SerializeClosure* f) { }
1498 };
1499
1500 class java_lang_Integer : AllStatic {
1501 public:
1502 static jint value(oop obj);
1503 };
1504
1505 class java_lang_Long : AllStatic {
1506 public:
1507 static jlong value(oop obj);
1508 };
1509
1510 class java_lang_Character : AllStatic {
1511 public:
1512 static jchar value(oop obj);
1513 };
1514
1515 class java_lang_Short : AllStatic {
1516 public:
1517 static jshort value(oop obj);
1518 };
1519
1520 class java_lang_Byte : AllStatic {
1521 public:
1522 static jbyte value(oop obj);
1523 };
1524
1525 class java_lang_Boolean : AllStatic {
1526 private:
1527 static int _static_TRUE_offset;
1528 static int _static_FALSE_offset;
1529 public:
1530 static Symbol* symbol();
1531 static void compute_offsets(InstanceKlass* k);
1532 static oop get_TRUE(InstanceKlass *k);
1533 static oop get_FALSE(InstanceKlass *k);
1534 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1535 static jboolean value(oop obj);
1536 };
1537
1538 class java_lang_Integer_IntegerCache : AllStatic {
1539 private:
1540 static int _static_cache_offset;
1541 public:
1542 static Symbol* symbol();
1543 static void compute_offsets(InstanceKlass* k);
1544 static objArrayOop cache(InstanceKlass *k);
1545 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1546 };
1547
1548 class java_lang_Long_LongCache : AllStatic {
1549 private:
1550 static int _static_cache_offset;
1551 public:
1552 static Symbol* symbol();
1553 static void compute_offsets(InstanceKlass* k);
1554 static objArrayOop cache(InstanceKlass *k);
1555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1556 };
1557
1558 class java_lang_Character_CharacterCache : AllStatic {
1559 private:
1560 static int _static_cache_offset;
1561 public:
1562 static Symbol* symbol();
1563 static void compute_offsets(InstanceKlass* k);
1564 static objArrayOop cache(InstanceKlass *k);
1565 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1566 };
1567
1568 class java_lang_Short_ShortCache : AllStatic {
1569 private:
1570 static int _static_cache_offset;
1571 public:
1572 static Symbol* symbol();
1573 static void compute_offsets(InstanceKlass* k);
1574 static objArrayOop cache(InstanceKlass *k);
1575 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1576 };
1577
1578 class java_lang_Byte_ByteCache : AllStatic {
1579 private:
1580 static int _static_cache_offset;
1581 public:
1582 static Symbol* symbol();
1583 static void compute_offsets(InstanceKlass* k);
1584 static objArrayOop cache(InstanceKlass *k);
1585 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1586 };
1587
1588 // Use to declare fields that need to be injected into Java classes
1589 // for the JVM to use. The name_index and signature_index are
1590 // declared in vmSymbols. The may_be_java flag is used to declare
1591 // fields that might already exist in Java but should be injected if
1592 // they don't. Otherwise the field is unconditionally injected and
1593 // the JVM uses the injected one. This is to ensure that name
1594 // collisions don't occur. In general may_be_java should be false
1595 // unless there's a good reason.
1596
1597 class InjectedField {
1598 public:
1599 const SystemDictionary::WKID klass_id;
1600 const vmSymbols::SID name_index;
1601 const vmSymbols::SID signature_index;
1602 const bool may_be_java;
1603
1604
1605 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1606 Symbol* name() const { return lookup_symbol(name_index); }
1607 Symbol* signature() const { return lookup_symbol(signature_index); }
1608
1609 int compute_offset();
1610
1611 // Find the Symbol for this index
1612 static Symbol* lookup_symbol(int symbol_index) {
1613 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1614 }
1615 };
1616
1617 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1618 klass##_##name##_enum,
1619
1620 #define ALL_INJECTED_FIELDS(macro) \
1621 CLASS_INJECTED_FIELDS(macro) \
1622 CLASSLOADER_INJECTED_FIELDS(macro) \
1623 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1624 MEMBERNAME_INJECTED_FIELDS(macro) \
1625 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1626 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1627 MODULE_INJECTED_FIELDS(macro)
1628
1629 // Interface to hard-coded offset checking
1630
1631 class JavaClasses : AllStatic {
1632 private:
1633
1634 static InjectedField _injected_fields[];
1635
1636 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1637 public:
1638 enum InjectedFieldID {
1639 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1640 MAX_enum
1641 };
1642
1643 static int compute_injected_offset(InjectedFieldID id);
1644
1645 static void compute_hard_coded_offsets();
1646 static void compute_offsets();
1647 static void check_offsets() PRODUCT_RETURN;
1648 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1649 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1650 };
1651
1652 #undef DECLARE_INJECTED_FIELD_ENUM
1653
1654 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP